The three types of unification that can alter political and economic relationship are Incorporating Federal (or con-federal) union and Mixed unions.
<u>Explanation:</u>
- A political union is a kind of state that is made of smaller states. The process of forming such a state out of smaller states is termed unification.
- The unification of states that used to be unified and that is reuniting is known as reunification.
- Types of unification that can alter political and economic relationships are as follows,
- Incorporating union
- Federal (or confederal) union
- Mixed unions.
The sun warms the earth mainly at its surface.
A seismograph is used and p waves and s waves are used to determine the distance of the waves
Answer:I think it is ecology
Explanation: because ecology study about the interaction between people and environment
